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User Guide | Optyma™ iCO2
2.8 Survey of functions
Function
Normal display
The display shows the suction pressure in temperature.
Regulation
Min. Pressure
The lower setpoint for suction pressure. See instructions for CDU.
Max. Pressure
The upper setpoint for suction pressure. See instructions for CDU.
Demand Operation
Limits the compressor speed of the CDU. See instructions for CDU.
Silent Mode
Enable/disable silent mode.
Operating noise is suppressed by limiting the speed of the outdoor fan and compressor.
Snow Protection
Enable/disable snow protection functionality.
To prevent snow from building up on the outdoor fan during winter shutdown, the outdoor fan is
operated at regular intervals to blow off the snow.
Main Switch
Start/stop the CDU
Reference source
The CDU can either use a reference that is configured with rotary switches in the CDU, or it can use
the reference as defined by parameter r01 and r02. This parameter configures which reference to
use.
For Danfoss Only
SH Guard ALC
Cut-out limit for ALC control (oil recovery)
SH Start ALC
Cut-in limit for ALC control (oil recovery)
Oil ALC setpoint LBP
(AK-CC55 parameter P87,P86)
SH Close
(AK-CC55 parameter ---)
SH Setpoint
(AK-CC55 parameter n10, n09)
EEV force low OD after oil recovery
(AK-CC55 AFidentForce = 1.0)
Oil ALC setpoint MBP
(AK-CC55 parameter P87,P86)
Oil ALC setpoint HBP
(AK-CC55 parameter P87,P86)
Miscellaneous
If the controller is built into a network with data communication, it must have an address, and the
system unit of the data communication must then know this address.
The address is set between 0 and 240, depending on the system unit and the selected data
communication.
Evaporator controller addressing
Node 1 Address
Address of the first evaporator controller
Will only be shown if a controller has been found during scan.
Node 2 Address
See parameter Io01
Node 3 Address
See parameter Io01
Node 4 Address
See parameter Io01
Node 5 Address
See parameter Io01
© Danfoss | Climate Solutions | 2023.01 | LCA012A030
Parameter
Remark
r01
r02
r03
r04
r05
r12
r28
r20
r21
r22
r23
r24
r25
r26
r27
o03
Io01
Io02
Io03
Io04
Io05
BC408445719305en-000101 | 21
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